Shade-adjuster.



C. II/I. EVELETI'I.

SHADE ADJUSTER. APPLICATION FILED MAR. 2l. i916.

Patentd De@ II, 1917?,

i am WIIIIc-xsws NITED STATES PATENI OFF Specification of Letters Patent.

Patented Dec. 11, 1917.

Application. and naar e1, 191s. Serin No, $5,667.

To all whom t may concern lie it known that l, CLARENCE M. EvnLn'rI-I, a citizen of the United States, residing at .lliver lforest, (town of) Proviso, in the county of CookL and State of Illinois, have invented a new and useful Shade-Adjuster, of which the following is a specification.

rllhis invention relates to window shade adjusters, and more particularly to that type which permits the entire shade to be adjusted relative to the window frame.

An object of the present invention is to provide a shade adjuster so constructed that both ends of tho curtain supporting means are uniformly moved relative to the window frame, thereby maintaining the supporting means in a horizontal position.

iAnother object of the present invention is to provide a shade adjuster embodying means for locking the curtain member in its uppermost position without permitting any downward movement of the said supporting means.

A further object of the invention is to provide a shade adjuster of generally improved construction, whereby the device will be convenient, practical, serviceable and efficient in its use.

lWith the foregoing and otherobjects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

This invention has been illustrated in its preferred embodiments in the acco1npanying drawing, whereinj Figure 1 is an elevation of a window frame showing the improved shade adjuster applied thereto.

lig. 2 is a fragmental elevation of the opposed side of the frame, depicting the ini'rntion applied thereto.

lFig. 3 is an elevation of a portion of the curtain supporting bar and a portion of the window frame.

lFi g. 4l is a vertical sectional view taken on the line t-t of Fig. 3.

Fig. 5 is a detail perspective vievv of the curtain supporting member.

lig. 6 is a fragmental horizontal section taken on the line of Fig. 3,

y flanges 1l.

Fig. 7 is a transverse sectional view taken through a modilied form of curtain support.

Referring more specifically to the drawings, S designates the stiles of a window frame, T the top rail and L the sill.

Secured tothe inner or adjacent faces of the Stiles, are rack members preferably formed of sheet metal. Each rack member is provided with an intermediate perforated plate 1, a longitudinally disposed securing flange 2 and a longitudinal guide flange 3. in order to support the curtain C relative `to the window frame, there is provided a curtain support or bar Ll, having guide strips 5 secured at the oppositeends thereof. `Each. guide strip 5 has a guide flange 6 entending from the outer or free end thereof, while at the lower terminal of the guide strip there is formed a. perpendicular guide arm 7, and a guide finger 8 projects perpendicularly from the arm 7, said flange being arranged parallel with the strip 5.

Bearing plates 9 are secured to the top face of the bar 4C, and at each end thereof, by screws or other securing elements 9. Theseplates are reduced at their outer ends to provide guide lugs 10, and bearing flanges 11 extend perpendicular-ly and downwardly from the outer ends of the lugs 10. `The flanges 11 are provided with apertures, the function of which will. be hereinafter disclosed.

An ordinary curtain or shade C is carried by the usual spring roller lt, that is supported by opposed brackets B, which have their securing flanges 13 secured to the supporting bar 4, by screws or other securing elements lll. The screws 111, also, extend through the strips "5, and thereby secure them to the bar le A. lcngitudin al groove 15 is formed in the upper face of the bar ft, for the reception of a shaft 17 that extends longitudinally of the `bar 5 and beyond the opposed ends thereof,

where the shaft 17 in turn projects through the apertures 12 formed in the j bearing Pinions 18 are secured to the opposed terminals of the shaft 17, and they are adapted to mesh with the perforated plate 1, to thus insure the uniform movement of the opposed ends of the bar or cur tain support t.

It will be observed that the lower ends of the racks 1 terminate above the sill L, so that the bar ft may be assembled relative to the said racks by moving the bar upwardly from the lower ends of the racks l. The pinions 1S are held in operative relation to the racks l by the guide strips 5, flanges 6, arms 7 and fingers 8, also, by the lugs 10 and bearing anges l1.

"A longitudinal groove 19 is formed in the front face of the bar gl. and a transycrse groove 20 communicates with and extends from .the longitudinal groove 19 to the upperedge of the bar 4. An extension helical spring k21is receivedby the longitudinal groove 19 and the outer end of this spring is secured to the bar by a screw orother se` curing device 221. Secured to the opposed or inner `terminal of the spring 2l is a flexibleelement vor cord 28, that is trained around 'a pulley Lft which is pivotally securedI to the bar d and within the groove 2O as indicated kat 25. A` suitable hanger 26 is secured to the rail T and is designed to pivotally support spaced pulleys 27 and 28. Theo-pulley 27 has spiral or cam grooves 27 formed in the flanges thereof, which are adaptedfto grip the cord 28 between the ',pulley27 and awall of the hanger 26, when the ,cord 23 has been moved into engage- *mentl with the said cam grooves. T he cord v23 after passing around the pulley 2l is then ytrained over the pulleys 27 and 2S, and then down to the lower terminal of the .shade C, where it is suitably secured, as indicated at 29.,

y A stopmember is provided by passing a .screw 3Q through a tube or spacing sleeve 3l, and then screwing it into the lower face .of ,thetop rail T. The head of the screw Slis secured in theV path of travel of the and, therefore, limits the upward movement of the said bar. y

In practical operation, the entire shade may bevelevated by simply exerting a downward pressure upon the cord 23, which will move over the pulleys 27 and 28 and consequentllyv draw lthe curtain supporting` bar L 4upwardly. After the shade has been adjpustedto the desired position, it may be 'secured by simply moving' the cord 2.3 to one side of the pulley 27, and then allowing a slight downward. or retrograde movement iofithebar EL, which will rotate the pulley 27 Lsullicient,to cause the cam grooves 27 to bind,onfgrip,thel cord against the hangers Now, Athe shade C maybe withdrawn La curtain supporting bar sliding from the roller R or wound upon the roller at the will of the operator.

`When it is desired to secure the curtain inV its uppermost position. the bar t is elevatcd until it strikes the head of' the screw 30, thus limiting' the upward movement ot the curtain supporting bar l. However, the operator continues to pull on the outer portion of the cord until sullieieut cord has been drawn over the pulleys 27 and 2S to place the spring 2l under tension, a'lter which the cord is moved to one side ot the pulley and released, thus allowing the spring to draw the cord back over the pulley 27 and bind it as above described.

lt will be seen that this arrangement al- `lowsthe curtain to be secured in its uppermost position, without permitting the usual retrograde movement of the curtain during the locking or binding ot the curtain cord.

ln the form ot the invention shown in Fig. 7, an angle bar 32 is substituted in lieu et the bar 4;, and it obviously perlorms the same functions.

Having thus described the invention, what is claimed as new is:

l. The combination with a trame having a curtain supporting bar slidallle thereon, of an extension spring` having one terminal secured to the said bar; a pulley rotatably .secured to the curtain supporting bar; a cam pulley supported by the said trame; and a, flexible member having one end secured to the free terminal of the spring, said ilexible member being trained around the pulley which secured to the curtain support and over the cam pulley.

2. A shade adjuster', comprising a trame,

in the frame, a liexible member t'or slitting the bar, means for guiding and locking the llexiblc member, and resilient means tor actuating lthe guiding means to lock the flexible member when the supporting rod is in its topmost position.

y ln testimony that I claim the foregoing as my own, I have hereto altixed my signa` ture in the presence otl two witnesses.

, CLARENCE M. EVELETIT.

Witnesses; y

lVAL'rnn J. BnT'r, Enw. L. SCHUr/rz.

1min;- c. -f k i i copies of this patent may be obtained for give cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

